29) While threading on a lathe, the carriage is moved by means of :

Lead screw

Hand wheel

Feed rod

Gear train on a rack

Answer is:

Lead screw

Explanation:

While threading on a lathe, the carriage is moved by means of Lead screw

0.6495 P

0.6000 P

0.6403 P

0.6134 P

Answer is:

Setting the correct speed

Setting one cut for full depth of the thread

Making a series of cuts in the same cut

Moving the carriage by means of rack

Answer is:

Explanation:

Threads are cut on a lathe with a single point tool by making a series of cuts in the same cut.

'V' thread

Square thread

Saw tooth thread

Knuckle thread

Answer is:

Explanation:

Square threads are used for transmitting motion or power. Eg. screw jack, vice handles, cross-slide and compound slide, activating screwed shafts.

Pitches

Flanks

Crests

Roots

Answer is:

Explanation:

In a threaded assembly the contact between the male and female threads takes place on the Flank